*I advise using my program PS Vita Hacking Centre - It's easier and faster.*
Do you want to be able to play games from this site? You must only follow 5 steps contained in tutorial. You find there 29 pages in pdf and short video. Everything is explained in detail, so you don't have to special skills. Moreover you WON'T lose your warranty!
Tutorial uses HBL > Half-Byte Loader (HBL) is an open source Homebrew Loader for the Sony Vita and PSP. It allows to play FULL versions of games and even fan-made ones on any Vita or PSP. HBL allows to run emulators for the Game Boy, Game Boy Advance, Nintendo 64, Sega Megadrive, NES, Super NES… and many other applications.